The way the SAC skins worked is that they were/are a changable replacement for the stock skins. There is no skin overload because all the aircraft of a specific type will display only the one set of selected skins (just as it would the single stock skin). For example, every P-38 would be Bongs.
Where this pays off is with the substitute terrains, where you could set desert or snow-europe and have the appropriate cammo on the aircraft. Great for scenarios. I could see a similar option here, if HTC wanted to keep tight control (not sure why really), then (as noted above) perhaps at the hanger you could use a pull down menu to select from a handful of approved skins reflecting diff. nationalities and theaters of combat (N. Africa, E. Front Winter, etc). As a further extension, you could set the ground terrain as well, though some maps would work better than other in the MA.
Charon